It's the measured breathing of someone on oxygen, here in the small hours. I don't know where it's coming from. I hear it beneath the white noise of the air conditioner.
It's the faint jumpiness of a phone ringing, a monitor flatlining on a loop in my memory.
It's the droning in my own ears, the hum-buzz of the tinnitus, the electricity and insect sounds.
It's the whistle of a train, much louder than it should be. It soars over the top of it all. There are no trains nearby.
It's four AM again. The silence is not golden.